218 MR. E. BARTLETT ON PERUVIAN MONKEYS. [Feb. 21, 



These Monkeys appear to go in small parties, passing through the 

 forest at a rapid pace, feeding on different kinds of berries. The 

 berries I found in the mouth and stomach of the male were similar 

 to the gooseberry in external appearance ; they have, however, a large 

 stone inside. These stones appear to pass through them, as I found 

 several in the intestines. 



On my return to the town I found an Indian who had arrived 

 from Cauhapanas, a small town lying at the foot of the mountains in 

 the Maranon valley, north-west of the town of Chyavitos, who had 

 in his possession a very fine young Spider Monkey, which proved to 

 be of this species. It was nearly black, but just showing the light 

 golden hair coming on the underside of the body and tail, some few 

 white hairs on the cheeks, and slight golden crest, sufficient to iden- 

 tify the species. I bought it of the Indian, and managed to bring it 

 alive to Yurimaguas, where it died. 



On my arrival I was informed by some of my old Indians that 

 they discovered this Monkey during my absence on the Upper 

 Huallaga (on the south-eastern shores). One of the Indians said 

 that he brought three young ones alive, which died soon after his 

 arrival in the town. I here give an idea of the great range this 

 Monkey inhabits, owing to the ease with which a beast that can use 

 his long arms and tail may travel a country of this description. It is 

 found on both sides of the Peruvian Amazon (or Maranon), on both 

 shores of the Huallaga, and in the interior forest near the town of 

 Chamicuros. I was told by some of the oldest Indians that these 

 animals are common in the dense forest on the hills near the latter 

 town, their range running between the Huallaga river and Ucayali 

 river to the head-waters of the Huallaga, between the towns of Lamas 

 and Sarayacu. Here they occupy the interior forest, and appear to 

 be common, according to accounts given me by Indians of that country 

 — as also on the lower spurs of the mountains between the town of 

 Moyabamba and the Huallaga river. 



Then, again, on the Rio Tigri, north-western shores of the Great 

 Maranon, there is not the slightest doubt that this species is to be 

 found ranging along the lower spurs of the Andes, across Ecuador 

 and Columbia, over the head-waters of the Rio Napo, Rio Japura, and 

 Rio Negro, where Natterer first discovered it. 



2. Ateles ater. Black-faced Spider Monkey. 



The Black-faced Spider Monkey inhabits the forests on the 

 Ucayali, Chamicuros on the Huallaga river, and is found over the 

 whole of the valley of the Amazons, generally keeping to the low 

 districts. 



I shot an adult male at Chamicuros which had the inner part of 

 the thighs and belly very grey or grizzled. 



This is the only species of Ateles obtained in large numbers by 

 the Indians, who frequently keep them as pets. These Monkeys 

 travel in bodies of perhaps thirty or forty together. 



This and A. variegatus are, so far as I know, the only Spider 

 Monkeys which are found in the district which I explored. 



